Trivia

In Kracked Krabs, Squidward referred to the food as "sea fries", indicating that they might have actually been different fries (which explains why SpongeBob used potatoes to make them instead of kelp.)

Then again, they might not be made of actual Kelp. It could possibly just be a name.

Kelp Fries are a parody of French Fries.

Kelp Fries can be in different varieties.

Often, kelp fries are not on the Krusty Krab menu.

The episode "Krab-Borg" may have featured Kelp Fries since Mr.Krabs was served with fries when he was considered the "fake" Mr.Krabs.